2161046563 has 8 divisors (see below), whose sum is σ = 2407532400. Its totient is φ = 1926025248.

The previous prime is 2161046561. The next prime is 2161046593. The reversal of 2161046563 is 3656401612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2161046563 - 2¹ = 2161046561 is a prime.

It is a super-2 number, since 2×2161046563² = 9340244494908225938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2161046561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2865733 + ... + 2866486.

It is an arithmetic number, because the mean of its divisors is an integer number (300941550).

Almost surely, 2^2161046563 is an apocalyptic number.

2161046563 is a deficient number, since it is larger than the sum of its proper divisors (246485837).

2161046563 is a wasteful number, since it uses less digits than its factorization.

2161046563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732261.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2161046563 is about 46487.0580161834. The cubic root of 2161046563 is about 1292.8695536092.

The spelling of 2161046563 in words is "two billion, one hundred sixty-one million, forty-six thousand, five hundred sixty-three".